Do certain weather conditions lead to more home runs?

Yes! Weather conditions can change the distance a batted ball travels by more than 20%. Home Run Forecast provides a simple way to see the if weather will help or hinder baseball flight during a game. The Home Run Forecast Index demonstrates a strong correlation with the number of HRs hit and runs scored in big league games. Check out our Premium Subscription for on-demand HRFI forecast data by team and for each game.

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HRF forecast value available for each contest, with detailed data throughout the game.

Detailed weather data and hourly index data for each park.

Current Weather Conditions and HRF Index

The table below shows the Home Run Forecast Index (HRFI) value for each big league ballpark. The HRFI ranges from 1 to 10, with 10 indicating the most favorable weather conditions for ball fight and 1 indicating least favorable. Learn more about how we calculate this index here.

This data is updated hourly at the top of the hour. For ballparks with a retractable roof, the index is calculated for open roof conditions. Check local sources for roof status. For ballparks with a permanent roof, the index is calculated for indoor conditions.

Ballpark Location	Sky Cover	Temperature (°F)	Home Run Forecast Index™
Houston, TX	overcast clouds	90	10
Phoenix, AZ	few clouds	85	10
Sacramento, CA	clear sky	95	10
St. Louis, MO	overcast clouds	89	10
Anaheim, CA	clear sky	81	8
Arlington, TX	broken clouds	82	8
Chicago (NL), IL	light rain	65	8
Cincinnati, OH	overcast clouds	79	8
Cleveland, OH	moderate rain	69	8
Los Angeles, CA	clear sky	81	8
Minneapolis, MN	overcast clouds	72	8
San Diego, CA	clear sky	77	8
San Francisco, CA	scattered clouds	74	8
Toronto, ON	overcast clouds	70	8
Williamsport, PA	overcast clouds	69	7
Atlanta, GA	clear sky	81	7
Bronx, NY	overcast clouds	69	7
Kansas City, MO	overcast clouds	76	7
Pittsburgh, PA	overcast clouds	71	7
Queens, NY	overcast clouds	68	7
Tampa, FL	overcast clouds	78	7
Washington, DC	overcast clouds	74	7
Baltimore, MD	overcast clouds	73	6
Las Vegas, NV	clear sky	88	6
Miami, FL	light rain	81	6
Boston, MA	scattered clouds	65	5
Chicago (AL), IL	moderate rain	65	5
Milwaukee, WI	overcast clouds	65	5
Philadelphia, PA	overcast clouds	71	5
Tampa Bay, FL	overcast clouds	79	5
Denver, CO	overcast clouds	65	4
Detroit, MI	light rain	67	4
Seattle, WA	broken clouds	63	3

Data last updated: 1790808969

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Give your audience a quick way to understand how weather will affect hitting distance. Enhance your game previews, picks and analysis with hourly forecasts up to two days out. When it comes to fantasy baseball or the sportsbook every edge counts.